Valve.



J. L. PITTS & R. M. HUNTER.

VALVE.

APPLICATION FILED Lamas, 1908.

1,024,884, Patented Apr. 30, 1912.

- and shown in the accompanying drawings,

"adapted as a modulation valve for control the extent to which the hand-wheel has been UNITED STATES PATENT OFFICE;

JAMES L. FITTS, 0F PENSAUKEN TOWNSHIP, CAMDEN COUNTY, NEW JERSEY, AND RUDOLPH M. HUNTER, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNORS TO WAR" BEN WEBSTER & COMPANY, A CORPORATION OF NEW'J'ERSEY.

VALVE.

1,024,884. Specification of Letter P n Patented Apr. 30, 1912.

Application filed January 28,1908. Serial No. 412,953.

To all whom it may concern:

Be it known that we, JAMES L. Frr'rs and RUnoLrr-r M. HUNTER, citizens of the United States, and residents of Pensauken township, county of Camden, State of New Jersey, and of the city and county of Philadelphia, State of Pennsylvania, respectively, have invented an Improvement in Valves, of which the following is a specification.

Our invention has reference to valves, and consists of certain improvements which are fully set forth in the following specification,

which form a part thereof.

The object of our invention is to provide a form of quick acting valve especially ling the steam to radiators of a steam heating system, whereby an accurate adjustment of the steam supply may be had to the radiator and for the purpose ofsecuring the exact amount of heat which may be required in the room and to permit the said regula; tion of the temperature of the room in an intelligent manner. I

More specifically, our object is to. provide a valve which, by a partial revolution of a hand-wheel, will fully open or close the valve, so that the operator may at all times know to what extent the valve is open by rotated.

Our invention consists, among other things, in a valve-body having a valve-seat,- combined with a rotatable part having a longitudinal screw adjustment to or from the seat, and a valve-piece having a screw connection with the rotatable part and held against rotation, whereby the rotation of the rotatable part simultaneously causes the travel of both itself and the valve-piece toward or from the valve-seat.

Our invention also consists of the devices above specified, when combined with a hand rotatable part having a packed joint with the valve-body or bonnet thereof and a connection with the rotatable part to rotate it while permitting longitudinal adjustment thereof.-

Our invention also consists of details of construction, which, together with the features above specified; will be better understood by reference to the drawings, in

Figure 1 is a sectional elevation of a steam valve embodying our improvements; Fig. 2.

A is the valve-body and is provided with i an inlet port C and an outlet port D.

B is the valve-seat and is screwed into a diaphragm in the valve-body in the ordinary way.

E is the bonnet and is screwed into the top of the yalve-body. The interior of the lower part of the bonnet is screw-threaded as at G and with which screw-threads upon the periphery of'the' rotatable part G engage, so that by rotating the said part G, it made to advance toward or recede from the valve-seat B. The rotatable part G is tubular, and has the lowerportion of its tubular port-ion provided with a screwthread F in the reverse direction to the screw-thread G and with which the screwthreaded part F of the valve-piece F engages. The valve-piece F, above the screwthreaded part F, is provided with a guide stem F which works through a guide G in the upper part of the rotatable part G and ,/jointly with the threaded portion F acts to hold the valve-piece F in a position to properly cot iperate with the valve-seat. The lower part of the valve-piece F is made conical, and said valve-piece is provided with a lateral pin or arm f which is guided in a vertical slot 9 in a downwardly extending portion of the bonnet on the inside of the valve-body.

,From the foregoing described construction, it will be understood that if the rotatable part G is rotatedin a leftward direction, it will rise in the threaded portion G of the bonnet, and move away from the valve-seat. Moreover, the rotation of the part G upon the screw-threaded part F of the valve-1 which each revolution of the rotatable part G.

By employing the intermediate rotatable tion shown, three quarters of the revolution is all that is required to accomplish the full opening of the valve. In an ordinary globe valve, a number of revolutions would be required, and the operator would never know how far the valve was open unless he took the greatest of care in testing the same before using it. By means of our improved valve, a novice can manipulate the valve and know at once to what extent it is open, because of the limited movement of the hand-wheel and the provision to indicate the positions of adjustment, to be described hereinafter. It is evident that the rotatable part Gr may be operated by a hand-wheel in any suitable manner, such for example as by the stem of an ordinary globe valve. We have, however, shown a convenient, inexpensive and compact arrangement for operating the rotatable part G from the hand-wheel L. The upper part of the bonnet E is formed with a cylindrical bearing E and a shoul dered portion E immediately below it. Resting against the shouldered portion E, is an annular packing ring J.

Journaled within the bearing portion E is a socket piece H having a flange H at the bottom, which rests against the packing ring J. This socket piece H is provided with a square socket I in which fits the s uare end I (Fig. 3) of the rotatable part so that when the socket piece is rotated, it also turns or rotates the rotatable part G while permitting it to adjust itself longitudinally with respect to the socket piece. The upper end of the socket piece is provided with a square shank l[ which fits a square hole L in the plate L on the bottbm of the hand-wheel L Above the shank I is provided a screwthreaded part having a nut m which presses upon a cup spring M resting upon the top of the hand-wheel. In. this manner, the plate L of the hand-wheel rests upon the top of the bonnet and the flanged part H of thesocket piece may be drawn upward and caused to press upon the packing J with a spring action to insure a steam tight joint. The fit of the socket piece H in the bearing portion E of the bonnet may be as tight as desired, provided it may rotate freely therein.

By the means above described, for operat ing the rotatable part G, it isevident that there is a steam tight joint provided by the vmeans which move the said part G and nominee valve-piece, without causing the hand-wheel to rise and fall during its rotation. To hold the hand-wheel in its points of adjustment and to indicate also the extent of its adjustment, a spring actuated detent may be caused to engage with recesses Z on the under side of the plate L of the handwheel L. Seven such points of adjustment are shown (Fig. 4), so that seven positions of the hand-wheel may be had for correspond ing adjustments of the valve-piece F, includ ing the fully closed and fully open positions. The spring actuated detent la is car ried by an adjustable ring K which fits around the outside of the tubular bearing E of the bonnet and is clamped in adjusted position by means of the screw K. After the valve-piece has been screwed down to its seat, as indicated in Fig. 1, the collar K is adjusted in position to bring the detent 74 into engagement with the first notch or recess Z on the hand-wheel, and the collar is then clamped fixedly upon the bonnet. The turning of the hand'wheel will then indicate the adjustment of the valve both by the extent of its rotation and by the number of times the detent engages the recesses. The rotation of the hand-wheel to the right closes the valve, and vice versa. Itwill be observed that the pitch of the screw-thread Fand the screw-thread G are reversed, so that the rotation of the rotatable piece G will cause an axial movement of the valvepiece in the same direction as it moves itself.

While we have shown our invention in the form which is found most excellently adapted for commercial use, we do not limit ourselves to the details thereof, as these may be modified in various ways, without de parting from the spirit of the invention.

Having now described our invention, what we claim as new, and desire/to secure by Letters Patent, is

1. In a valve, a bonnet and a body having a valve-seat, combined with a rotatable part screwed into the bonnet and adjustable to or from the valve-seat-, a valve piece screwed into and guided by the rotatable part, means on the bonnet independent of the body to hold the valve-piece against rotation, means for rotating the rotatable part consisting of a packed part extending into the bonnet and having a hand-wheel on the outside, and a detent device supported by the bonnet for engaging the hand-wheel in difi'erent positions of adjustment.

2. In a valve, a body having a valve-seat, combined with a rotatable part screwed into the body and adjustable to or from the valve-seat, a valve-piece screwed into and guided by the rotatable part, means to hold the valve-piece against rotation, means for rotating the rotatable part consisting of a packed part extending into the body and having a hand-wheel on the outside, a ring adjustably secured to the valve-body, and a detent device carried by the ring for engaging the hand-wheel in different positions of adjustment.

3. In a valve, a body, a bonnet screwed onto the body and having an internal screwthreaded part, a rotatable part within the bonnet and engaging the internal screwthread thereof, a "valve-piece having a smooth stem guided in the rotatable part and also having a screw connection therewith, means for holding the valve-piece from rotating, and means for rotating the rotatable part.

4. In a valve, a body, a bonnet screwed onto the body and having an internal right handed screw-threaded part, a rotatable part within the bonnet and engaging the internal screw-thread thereof, a valve-piece having a smooth stem guided in the rotatable part and also having a left handed screw connection therewith, means on the bonnet for holding the valve-piece from rotating, and means for rotating the rotatable part consisting of a handle and a packed extension through the bonnet. v

5. In a valve, :1 bonnet and a body structure having a valve-seat, combined with a valve-part movable to or from the valveseat and held against rotation by a sliding connection with the bonnet, a hand operated rotatable part adjustably screwed upon the bonnet and also upon the valve-part whereby both the rotatable part and valve-part simultaneously move to or from the valve-seat but in which the valve-part moves with greatest speed, and means for indicating the position of the valve-part, said means acting upon the hand operated portions of the rotatable part.

6. In a valve, a body structure having a valve-seat, combined with a valve-part movable to or from thevalve-seat and held against rotation, a hand operated rotatable part adjustably screwed upon the body structure and also upon the valve-part whereby both the rotatable part and valve-part simultaneously move to or from the valveseat but in which the valve-part moves with greatest speed, a hand-wheel to rotate the hand operated rotatable part, and a detent device adjustably carried by the valve-body Witnesses:

.R. M. KELLY,

A. W. RETTIG; 

